EP1633468B2 - Flüssige wasch- und reinigungsmittelzusammensetzungen enthaltend lagerstabile kapseln auf basis von peroxycarbonsäuren - Google Patents
Flüssige wasch- und reinigungsmittelzusammensetzungen enthaltend lagerstabile kapseln auf basis von peroxycarbonsäuren Download PDFInfo
- Publication number
- EP1633468B2 EP1633468B2 EP04736308.0A EP04736308A EP1633468B2 EP 1633468 B2 EP1633468 B2 EP 1633468B2 EP 04736308 A EP04736308 A EP 04736308A EP 1633468 B2 EP1633468 B2 EP 1633468B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- acid
- inorganic salt
- capsules
- weight
- capsule shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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- 239000007788 liquid Substances 0.000 title claims abstract description 30
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- 238000005406 washing Methods 0.000 title claims description 46
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- 229910017053 inorganic salt Inorganic materials 0.000 claims abstract description 85
- 150000007513 acids Chemical class 0.000 claims abstract description 67
- UZJGVXSQDRSSHU-UHFFFAOYSA-N 6-(1,3-dioxoisoindol-2-yl)hexaneperoxoic acid Chemical compound C1=CC=C2C(=O)N(CCCCCC(=O)OO)C(=O)C2=C1 UZJGVXSQDRSSHU-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000006185 dispersion Substances 0.000 claims description 68
- 239000004094 surface-active agent Substances 0.000 claims description 30
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical group [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 26
- 239000000126 substance Substances 0.000 claims description 26
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- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 16
- DUYCTCQXNHFCSJ-UHFFFAOYSA-N dtpmp Chemical compound OP(=O)(O)CN(CP(O)(O)=O)CCN(CP(O)(=O)O)CCN(CP(O)(O)=O)CP(O)(O)=O DUYCTCQXNHFCSJ-UHFFFAOYSA-N 0.000 claims description 16
- 239000002904 solvent Substances 0.000 claims description 16
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 claims description 15
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 claims description 15
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- WJJMNDUMQPNECX-UHFFFAOYSA-N dipicolinic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=N1 WJJMNDUMQPNECX-UHFFFAOYSA-N 0.000 claims description 12
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/046—Salts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/11—Encapsulated compositions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/38—Percompounds, e.g. peracids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q5/00—Preparations for care of the hair
- A61Q5/08—Preparations for bleaching the hair
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q5/00—Preparations for care of the hair
- A61Q5/10—Preparations for permanently dyeing the hair
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
- B01J13/04—Making microcapsules or microballoons by physical processes, e.g. drying, spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
- B01J13/20—After-treatment of capsule walls, e.g. hardening
- B01J13/22—Coating
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
- C11D17/003—Colloidal solutions, e.g. gels; Thixotropic solutions or pastes
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0039—Coated compositions or coated components in the compositions, (micro)capsules
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/18—Hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/22—Carbohydrates or derivatives thereof
- C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/38—Products with no well-defined composition, e.g. natural products
- C11D3/386—Preparations containing enzymes, e.g. protease or amylase
- C11D3/38636—Preparations containing enzymes, e.g. protease or amylase containing enzymes other than protease, amylase, lipase, cellulase, oxidase or reductase
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/39—Organic or inorganic per-compounds
- C11D3/3902—Organic or inorganic per-compounds combined with specific additives
- C11D3/3937—Stabilising agents
- C11D3/394—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/39—Organic or inorganic per-compounds
- C11D3/3945—Organic per-compounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/41—Particular ingredients further characterized by their size
- A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/52—Stabilizers
Definitions
- the present invention relates to liquid detergents and cleaners.
- the detergent formulation thus significantly loses washing performance, especially bleaching capacity, so that in particular bleachable soiling can not be removed satisfactorily.
- the bleaching components commonly used for solid detergent formulations are extremely sensitive to moisture, so that a significant decrease in their bleaching action is often observed within a few days in a liquid and particularly aqueous detergent and cleaner due to the loss of active oxygen. Therefore, such active ingredients at the time of their use, especially in the wash liquor, often have already lost their bleaching effect and thus be ineffective.
- peroxycarboxylic acids in particular imidoperoxycarboxylic acids whose most important representative is phthalimidocaproic acid (PAP)
- PAP phthalimidocaproic acid
- their storage stability is far from sufficient to ensure a long-term applicability of the corresponding washing or cleaning agent without accompanying loss of activity.
- peroxycarboxylic acids in particular imidoperoxycarboxylic acids, in liquid detergents and cleaners.
- waxes are often used in the art as a protective cover for sensitive detergent additives, such as peroxycarboxylic acids.
- sensitive detergent additives such as peroxycarboxylic acids.
- an aqueous bleaching composition comprising a particulate and substantially water-insoluble organic peroxy carboxylic acid and also an alkanesulfonate and a fatty acid contains.
- a stable dispersion of the peroxycarboxylic acid should be obtained and in particular a phase separation of the peroxycarboxylic acid be prevented from the aqueous medium.
- a protection in the sense of a chemical or physical stabilization of the peroxycarboxylic acid by the application of an encapsulation on the peroxycarboxylic acid is not provided.
- EP 0 334 404 B1 stabilizing the peroxycarboxylic acid against phase separation in an aqueous bleaching composition by adding a fatty acid.
- an encapsulation of the peroxycarboxylic acid is not provided in this document.
- the EP 0 337 516 A2 describes aqueous bleaching compositions based on a water-insoluble organic peroxycarboxylic acid.
- the stability of the peroxycarboxylic acid is said to be enhanced by the presence of alkanesulfonates and sodium sulfate in the liquid composition. Again, there is no indication of encapsulation.
- WO 94/13776 aqueous bleaching compositions based on peroxycarboxylic acids wherein generally a stabilization of the peroxycarboxylic acid by adjustments of the liquid compositions - ie the dispersant - are provided. Further stabilization of the peroxycarboxylic acid, in particular by an encapsulation or enveloping structure which is applied to the peroxycarboxylic acid, is likewise not mentioned in this document.
- an object of the present invention is therein; to provide a storage or encapsulation or coating of peroxycarboxylic acids, in particular imidoperoxycarboxylic acids, such as phthalimidoperoxycaproic acid (PAP), with improved properties compared to the prior art and a corresponding preparation process.
- peroxycarboxylic acids in particular imidoperoxycarboxylic acids, such as phthalimidoperoxycaproic acid (PAP)
- a further object of the present invention is to provide peroxycarboxylic acids which are imidoperoxycarboxylic acids, such as phthalimidoperoxycaproic acid (PAP), in a storage-stable form.
- PAP phthalimidoperoxycaproic acid
- a form of preparation of peroxycarboxylic acids is to be developed, which at least substantially prevents or reduces the dissolution or dissolution of the peroxycarboxylic acids in the state of concentrated dispersions and preferably their solid or crystalline state even in the presence of surfactants or any other environment which has a dissolving power for peroxycarboxylic acids owns, in particular in detergent or cleaner formulations receives.
- a contact of the peroxycarboxylic acids with the environment should be at least substantially prevented or at least reduced.
- Yet another object of the present invention is to provide capsules which are loaded with peroxycarboxylic acids in solid form and lead to a good stabilization of the peroxycarboxylic acids and thus to an improved storage stability.
- capsules are to be provided which rapidly dissolve during the washing process and do not impair the release of the peroxycarboxylic acid, in particular into the wash liquor.
- capsules are to be provided which leave no residues during the washing process, which is to be achieved by a substantially complete dissolution and / or solubilization or dispersion of the capsules.
- the process for producing these capsules should be equally cost-effective, technically simple and applicable on an industrial scale.
- organic peroxycarboxylic acids namely imidoperoxycarboxylic acids (eg PAP)
- PAP imidoperoxycarboxylic acids
- the present invention relates to liquid detergent compositions containing dispersions, in particular aqueous dispersions, containing at least one organic peroxycarboxylic acid which is an imidoperoxycarboxylic acid, preferably PAP, loaded capsules comprising at least one imidoperoxycarboxylic acid, preferably PAP, which at least substantially an encapsulated capsule shell based on an inorganic salt are coated and / or coated, wherein the capsules comprise a capsule shell based on at least one inorganic salt and a capsule core based on at least one Imidoperoxycarbonklare, and an inorganic salt, the solubility of the capsule shell forming inorganic salt reduced in the dispersion.
- aqueous dispersions containing at least one organic peroxycarboxylic acid which is an imidoperoxycarboxylic acid, preferably PAP
- loaded capsules comprising at least one imidoperoxycarboxylic acid, preferably PAP, which at least substantially an encapsulated capsule shell
- the peroxycarboxylic acid to be encapsulated is incorporated in or enveloped by a capsule shell so that the peroxycarboxylic acid forms the core of the capsules;
- a capsule system with a core / shell structure.
- the capsules may also each have a plurality of capsule cores, in particular agglomerates of peroxycarboxylic acid particles may form in the course of the production. Agglomeration of several capsules is also possible. In this way, as it were, a matrix can arise in which several capsule cores are embedded or embedded.
- the capsule shell is designed on the basis of at least one inorganic salt, in the context of the present invention, the term "based on at least one inorganic salt” is to be understood that in addition to the inorganic salt also other materials or substances, in particular as listed below , can be used to form the capsule shell.
- the capsule core which is designed according to the invention on the basis of at least one organic peroxycarboxylic acid and also other substances - if application-related desired or required - may have.
- solution or “dispersion” can be understood to mean a liquid medium, in particular an aqueous medium, which preferably contains the inorganic salt in dissociated form.
- a liquid medium in particular an aqueous medium, which preferably contains the inorganic salt in dissociated form.
- the inorganic salt in the liquid medium, the inorganic salt but also in non-dissolved or only partially dissolved, z.
- crystalline form dispersed, for example, when the solubility of the corresponding inorganic salt is exceeded in the medium.
- imidoperoxycarboxylic acids more preferably 6-phthalimidoperoxycaproic acid (6-phthalimidoperoxyhexanoic acid, PAP) are used.
- the peroxycarboxylic acid should be at atmospheric pressure, i. H. 101 325 Pa, a melting point above 25 ° C, in particular above 30 ° C, preferably above 45 ° C, preferably above 50 ° C, particularly preferably above 100 ° C.
- the particle size of the organic peroxycarboxylic acid used can be from 10 to 3,000 ⁇ m, in particular from 50 to 2,500 ⁇ m, preferably from 100 to 1,500 ⁇ m.
- the particle size of the organic peroxycarboxylic acid used should be ⁇ 3,000 ⁇ m, in particular ⁇ 2,500 ⁇ m, preferably ⁇ 2,250 ⁇ m, preferably ⁇ 2,000 ⁇ m, particularly preferably ⁇ 1,500 ⁇ m.
- adjusting the particle size of the solid peroxycarboxylic acid particles-and the associated size of the resulting capsules-preferably before the application of the capsule shell in process step (b) by methods known in the art as such, for example by crushing or grinding, vibration and / or ultrasound entry, screening and the like, so that a targeted adjustment of the particle or capsule size according to their respective later use is possible.
- the other components used in the method of making the capsules should be selected so as to be at least substantially compatible with the peroxycarboxylic acids to be encapsulated, ie, they should not have undesirable chemical reactions, such as in particular degradation, oxidation or reduction reactions and / or hydrolysis reactions, between these components and the peroxycarboxylic acid and not induced by the other components Reactions of peroxycarboxylic occur, which lead to their degradation, in particular loss of activity.
- the inorganic salt used to prepare the capsule shell should be a non-basic, preferably a neutral or a particularly weakly acidic salt.
- the inorganic salt may be selected from the group of inorganic sulfate, nitrate and phosphate salts, preferably inorganic sulfate salts.
- the inorganic salt may be selected from alkali or alkaline earth metal salts, preferably alkali metal salts.
- the inorganic salt should be a halide-free salt, in particular a non-basic, halide-free inorganic salt.
- the inorganic salt is particularly preferably sodium sulfate.
- the inorganic salt is selected such that it at least substantially does not increase the pH of the solution or dispersion into which the capsules can be transferred (for example a detergent or cleaner formulation) or does not shift in the direction of the alkaline range because this can reduce the stability of the peroxycarboxylic acid.
- a detergent or cleaner formulation for example a detergent or cleaner formulation
- sulfate salts particularly preferably sodium sulfate
- sulfate salts are suitable as a substance for the capsule shell of the capsules according to the invention and have a positive effect on the stability of the peroxycarboxylic acid.
- sulfate salts particularly preferably sodium sulfate
- the content of inorganic salt in the solution or dispersion provided in process step (a) for producing the capsule shell can be from 0.1 to 40% by weight, in particular from 1 to 30% by weight, preferably from 5 to 25% by weight to the solution or dispersion.
- the content of inorganic salt in the solution or dispersion provided in process step (a) should preferably be more than 1% by weight, in particular more than 5% by weight, preferably more than 10% by weight, based on the solution or dispersion , amount.
- the solution or dispersion other substances can be added, which can be incorporated into the capsule shell.
- the application of the capsule shell forming inorganic salt can be carried out by spraying the solution or dispersion of the inorganic salt.
- the application of the solution or dispersion provided in process step (a) can be effected by spraying onto the peroxycarboxylic acid present in the form of solid particles, preferably in a fluidized bed system or by spray drying (eg from a slurry or "Slurry" of the peroxycarboxylic acid, in particular PAP, and sodium sulfate) take place.
- the capsule shell can also be applied in a coating pan, drum coater, mixer or sausage coater.
- the temperature should be selected such that a temperature-dependent decomposition or dissolution of the organic peroxycarboxylic acid to be encapsulated or stabilized is at least substantially avoided.
- the formation of the capsule shell due to physical or chemical interactions or reactions, such as precipitation, crystallization or crystal formation processes take place.
- a crystallization of the dissolved or dissociated inorganic salt from the solution or dispersion preferably by evaporation or evaporation of the applied to the peroxycarboxylic acid solvent or dispersant, preferably water, but also by cooling or freezing to form the capsule shell respectively.
- the saturation concentration of the inorganic salt in the solution or dispersion can be exceeded by these process steps under defined conditions, so that crystal formation or crystallization of the inorganic salt results on the peroxycarboxylic acid.
- crystal formation can also be promoted by precipitation or salting out processes, for example, adding to the solution or dispersion a more easily soluble inorganic substance salt or other lower solubility inorganic salt solvent such as ethanol can be.
- the crystal size of the applied to the peroxycarboxylic acid inorganic salt or the resulting capsule shell can be adjusted in a wide range.
- the slower their growth process takes place for example, slow cooling or evaporation or evaporation of the solution or dispersion.
- a capsule shell with a fine-crystalline structure can be obtained, for example, by rapidly cooling or quickly evaporating the solution or dispersion.
- This substance can also be mixed with the peroxycarboxylic acid, in particular be mixed.
- a substance is, for example, boric acid.
- this substance can be applied directly to the peroxycarboxylic acid, preferably before application of the capsule shell, wherein, for example, the same method steps as for forming the capsule shell can be used. The added substance leads to an increase in the handling safety of the capsules, since it can intercept or compensate for any possible heat of reaction.
- a heat tone may be understood to mean a locally occurring increase in temperature in the capsules, which may be caused by a locally occurring or incipient exothermic decomposition of the peroxycarboxylic acid, but also in a container or in the dispersion itself - for example, during storage - occurring temperature increase.
- the added substance for example boric acid, may also be incorporated into the capsule shell containing the inorganic salt.
- preference is given to application to the peroxycarboxylic acid or mixing or mixing with the peroxycarboxylic acid, since this leads to a higher effectiveness with regard to handling safety.
- This complexing agent may be selected, for example, from the group of quinoline and / or its salts, phosphates, Alkalimetallpolyphosphonaten, picolinic acid and dipicolinic acid, mono- or polyphosphonic acids, in particular 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP), ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepenta (methylenephosphonic acid) (DTPMP), azacycloheptane diphosphonate (AHP) and / or nitrilotriacetic acid (NTA).
- HEDP 1-hydroxyethylidene-1,1-diphosphonic acid
- EDTA ethylenediaminetetraacetic acid
- DTPMP diethylenetriaminepenta
- AHP azacycloheptane diphosphonate
- NTA nitrilotriacetic acid
- process step (c) can be carried out by conventional methods known to the person skilled in the art, for example by freeze-drying (lyophilization), evaporation of the solvent, preferably at a temperature of 40 ° C. to 60 ° C., ultrafiltration, dialysis or spray drying under mild conditions.
- An optionally performed in process step (c) shaping can be done for example by rounding or the like.
- the capsules obtained by the process and loaded with at least one organic peroxycarboxylic acid, namely imidoperoxycarboxylic acid, can have an average size (spherical diameter) of 10 to 4,000 ⁇ m, preferably 50 to 2,000 ⁇ m, preferably 100 to 1,000 ⁇ m.
- the capsules may be separated according to their size (eg by classification), for example by sieving.
- the proportion of the capsule shell in general ⁇ 5 wt .-%, in particular ⁇ 10 wt .-%, preferably ⁇ 20 wt .-%, based on the capsules.
- the content of inorganic peroxycarboxylic acid namely imidoperoxycarboxylic acid, preferably PAP, is generally from 25 to 95% by weight, in particular from 30 to 90% by weight, preferably from 40 to 85% by weight, particularly preferably from 50 to 80% by weight , based on the capsules.
- an adjustment of the content of peroxycarboxylic acids should be carried out, for example, against the background of increasing the handling safety of the capsules according to the invention. For example, for reasons of product safety, too high a content of peroxycarboxylic acid may not be desirable.
- the content of peroxycarboxylic acid should be, for example, about 50% by weight, based on the capsules.
- the capsules produced by the method have a so-called "controlled-released effect".
- a "controlled-released effect” is to be understood in particular as a slight delay, preferably between 1 and 15 minutes, in the dissolution of the capsules during their application, for example in a wash liquor, or a delay in the release of the peroxycarboxylic acid from the capsules ,
- At least one additional capsule shell or shell layer can additionally be applied to the capsules, which have a capsule shell based on the at least one inorganic salt.
- the additional capsule shell may have at least one substance which may be selected from inorganic salts, in particular sulfates or phosphates, inorganic oxides, organic polymers, for example cellulose ethers, polyvinyl alcohols (PVAL) or polyvinylpyrrolidones (PVP).
- the additional capsule shell may also comprise a gel based on an oil phase solidified or gelled by the addition of at least one stabilizer, in particular gelling agent.
- the additional capsule shell may also be a particularly multi-layered polyelectrolyte capsule shell;
- the multi-layer Polyelektrolytkapselhülle may comprise at least two layers, each having an oppositely charged polyelectrolyte or respectively oppositely charged polyions.
- an additional stabilizing effect with respect to the organic peroxycarboxylic acid to be stabilized can be effected.
- this can also an additional "controlled-release effect" with respect to the peroxycarboxylic acids contained in the capsules can be achieved.
- the additional shell can lead to a suppression or reduction of the dissolution or dissolution of sulfate from the capsule shell, for example, in an environment not completely saturated with the corresponding salt, and thus further stabilize the capsule system.
- the application of the additional coating can be carried out in a manner known to those skilled in the art, for example by fluidized bed processes or by adsorption of the additional coating material ("coating material”) on the particles from solution, spraying a solution or melt of the coating material the particles and subsequent evaporation of the solvent, preferably water, or by means of coating ("coating") in the mixer, kettle, etc. are performed.
- additional coating material such as complexing agents and the like
- the capsules obtained by the process in process step (b) and / or (c) can be converted into a dispersion.
- the dispersion should comprise a dispersing agent, preferably water, and an inorganic salt which reduces the solubility of the inorganic salt forming the capsule shell in the dispersion.
- the salt dissolved or dispersed in the dispersion can advantageously correspond to the salt forming the capsule shell.
- the content of inorganic salt, particularly preferably sodium sulfate, should be selected in the dispersion such that degradation, in particular dissolution or dissolution, at least substantially prevents the capsule shell enveloping or coating the organic peroxycarboxylic acid in the state of (concentrated) dispersion or at least reduced.
- the inorganic salt of the dispersion corresponds to the inorganic salt of the capsule shell
- preferably identical salts i. H. each with the same cation or anion
- the use of such salts is possible, which have a match with respect to at least one ionic component, d. H. are identical with respect to the respective cation or identical with respect to the respective anion.
- the inorganic salt of the dispersion is to be chosen so that the concentrations of the corresponding anions or cations so flow into the solubility of the inorganic salt of the capsule shell that a dissolution and / or dissolution of the capsule shell in the dispersion at least substantially prevented or at least reduced.
- the nature and concentration of the inorganic salt in the dispersion should be chosen such that in the dispersion, the saturation concentration of the inorganic salt of the capsule shell is substantially reached or preferably slightly below.
- the content of inorganic salt, particularly preferably sodium sulfate, in the dispersion, in particular in the dispersion medium can for example be selected such that at a temperature which is lower by 5 ° C, in particular by 10 ° C, preferably by 15 ° C. as the storage or storage temperature of the dispersion, a dispersion substantially saturated with the inorganic salt is obtained.
- the content of inorganic salt, particularly preferably sodium sulfate should in this context be selected such that at about 0 ° C to 15 ° C, especially 0 ° C to 10 ° C, preferably 0 ° C to 5 ° C, essentially one obtained with the inorganic salt saturated dispersion or capsule dispersion.
- the content of inorganic salt, particularly preferably sodium sulfate, in the dispersion, in particular in the dispersion medium 5 to 30 wt .-%, in particular 10 to 30 wt .-%, preferably 15 to 30 wt .-%, based on the Dispersants, amount.
- a degradation, in particular a dissolution and / or dissolution of the organic peroxycarboxylic enveloping and / or coating capsule based on the at least one inorganic salt in the state of (concentrated) dispersion at least substantially prevented or at least is reduced.
- the previously defined dispersion can be a washing and cleaning agent, in particular a liquid washing and cleaning agent.
- the capsules obtained in process step (b) and / or (c) can be formulated according to the invention together with other ingredients to the washing or cleaning agent.
- the washing or cleaning agent should have at least substantially no halide ions, in particular chloride ions, or the amount of halide ions, in particular chloride ions, should be at most 500 ppm, preferably at most 100 ppm, particularly preferably at most 30 ppm.
- the pH should be at most 7 and in particular in the range from 3.5 to 7, preferably from 4.0 to 6, particularly preferably from 4.5 to 6, lie. Most preferably, the pH should be about 5.
- the washing or cleaning agent may contain at least one complexing agent; this may be selected, for example, from the group of quinoline and / or its salts, alkali metal polyphosphonates, in particular 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP), ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepenta (methylenephosphonic acid) (DTPMP), azacycloheptanediphosphonate (AHP), Nitrilotriacetic acid (NTA), citrate and / or short chain dicarboxylic acids.
- complexing agents are used in the context of the process, in particular for the complexation of heavy metal ions.
- the washing or cleaning agent may optionally comprise at least one water-miscible solvent having a low solvent power for the organic peroxycarboxylic acid, in particular imidoperoxycarboxylic acid (for example in amounts of preferably more than 20% by weight, more preferably more than 30% by weight).
- %, based on the washing or cleaning agent) or the water-miscible solvent is the dispersion medium of the dispersion.
- the solvent may be glycerol.
- the washing or cleaning agent at least one enzyme, such as at least one catalase and / or at least one peroxidase, preferably at least one catalase, and / or at least one antioxidant are added.
- the washing or cleaning agent at least one enzyme, such as at least one catalase and / or at least one peroxidase, preferably at least one catalase, and / or at least one antioxidant are added.
- the process also serves as a process for the stabilization of peroxycarboxylic acids, namely imidoperoxycarboxylic acids, preferably PAP, or as a process for increasing the shelf life of peroxycarboxylic acids, namely imidoperoxycarboxylic acids, preferably PAP.
- the process can be carried out as follows:
- a capsule shell of a non-alkaline , inorganic salt so that the peroxycarboxylic acid can be stabilized very well in a surfactant and water-containing liquid matrix.
- sodium sulfate is preferably used, the proportion of the capsule shell is more than 5 wt .-%, preferably more than 10 wt .-%, more preferably more than 20 wt .-%, based on the capsules.
- a soluble salt in a conventional water-based matrix is spontaneously peeled off, it is advantageous to add to the liquid matrix also a large amount, preferably of the same salt, here a high concentration of sulfate.
- concentration in the liquid matrix should be more than 5% by weight, preferably more than 10% by weight, based on the total system.
- the Applicant has been able to show that complete saturation with sulfate at room temperature is not absolutely necessary in order to obtain sufficient stability or shelf life of the capsule shell or capsules.
- an additional substance can be applied to the peroxycarboxylic acid.
- the peroxycarboxylic acid can be mixed with another component which can increase the handling safety of the capsules by an endothermic reaction occurring at elevated temperature.
- the capsule shell may be admixed with a complexing agent. Suitable complexing agents are in particular those which are effective at a slightly acidic pH (3 to 6, preferably 3.5 to 5.5).
- phosphonates for example HDEP and DTPMP, are suitable for this purpose.
- a further capsule shell (sheath) can be applied.
- further capsule shells are those which comprise polyelectrolyte layers with alternating charge or paraffin gel.
- the capsules which can be prepared by the process and are charged with at least one organic peroxycarboxylic acid, namely imidoperoxycarboxylic acid (eg PAP) comprise at least one organic peroxycarboxylic acid, namely imidoperoxycarboxylic acid, preferably PAP, which at least substantially envelopes or coats with a capsule shell based on an inorganic salt wherein the capsules comprise a capsule shell based on at least one inorganic salt and a capsule core based on at least one organic peroxycarboxylic acid, namely imidoperoxycarboxylic acid.
- organic peroxycarboxylic acid namely imidoperoxycarboxylic acid (eg PAP)
- PAP imidoperoxycarboxylic acid
- the capsule shell further additives or adjuvants may be added, for example stabilizers, modifiers, inorganic salts, dyes, complexing agents, etc.
- additives or adjuvants for example stabilizers, modifiers, inorganic salts, dyes, complexing agents, etc.
- the degradation, in particular the dissolution or dissolution, of the capsule shell takes place when the capsules are used (ie when the dispersion is diluted) due to physical or chemical interactions or reactions, for example solubilization or dissociation processes.
- the release of the encapsulated peroxycarboxylic acids, namely imidoperoxycarboxylic acid, for example PAP, from the capsules can take place on dilution (for example in a wash liquor).
- the release can be carried out in particular by degradation, for example by dissolution or dissolution or solubilization of the capsule shell with dilution (for example in the wash liquor).
- These processes can in particular be caused by a dilution of the inorganic salt dissolved in the dispersion or in the liquid washing or cleaning agent.
- the dilution of the inorganic salt in the dispersion is preferably such that the solubility product of the inorganic salt forming the capsule shell in the dispersion or in the wash liquor is below such that the capsule shell can be degraded, in particular by dissolution or dissolution .
- the release of the peroxycarboxylic acid can also be caused or supported by further processes, such as, for example, osmotic processes and / or diffusion processes.
- water molecules can diffuse along the concentration gradient through the capsule shell into the core region of the capsule system and there at a corresponding pH of the wash liquor, in particular at a pH ⁇ 7, lead to a dissolution or dissolution of the peroxycarboxylic acid.
- This can cause a bursting of the capsule shell with concomitant release of peroxycarboxylic acid in the wash liquor.
- Even mechanical influences can destroy the Contribute capsule shell, as explained below.
- a combination of the individual aforementioned processes with respect to the release of peroxycarboxylic acid from the capsule system is possible.
- the capsule system has many uses.
- the capsules can also be used as a "delivery system” or “controlled release system” for the controlled release of peroxycarboxylic acids, wherein the release of the peroxycarboxylic acid can be controlled in particular by the composition and the thickness of the capsule shell.
- composition is meant in particular the type and / or amount of the corresponding inorganic salt in the capsule shell.
- Another modification option is the application of at least one additional capsule shell (coating, "coating”) to the capsules;
- Such a capsule system can in particular also be used as a "delivery system” in which the peroxycarboxylic acids are released over a long period of time by prolonged or delayed release (“sustained-release effect").
- the detergents and cleaners according to the invention which comprise the capsule system according to the invention can be used both in the household and in the industrial sector.
- the detergents and cleaning agents according to the invention can be used for cleaning hard surfaces and / or softer, in particular textile surfaces.
- the detergents and cleaners according to the invention can be used in particular as dishwashing detergents, all-purpose cleaners, bathroom cleaners, floor cleaners, car washers, glass cleaners, furniture care and cleaners, facade cleaners, detergents or the like, particularly preferably as detergents.
- the washing and cleaning agents according to the invention are preferably suitable for cleaning fibers, textiles, carpets and the like.
- the detergents and cleaners according to the invention contain conventional ingredients or constituents (surfactants, fragrances, dyes, enzymes, enzyme stabilizers, odorants or builders, pH adjusters, other bleaching agents, bleach activators, silver protectants, dirt-repellent substances, optical brightener, grayness inhibitors, disintegration aids, thickeners, defoamers or foam inhibitors, complexing agents for heavy metals, soil repellents or soil repellents, dye transfer inhibitors, solvents, optical brighteners and / or other conventional ingredients), in the context of the present invention on the compatibility of the individual ingredients or components should be respected both with each other and with regard to the capsules according to the invention or to the peroxycarboxylic acids encapsulated therein, which is achieved by targeted selection of the ingredients or bes parts and / or their respective proportions is realized.
- conventional ingredients or constituents surfactants, fragrances, dyes, enzymes, enzyme stabilizers, odorants or builders, pH adjusters, other bleaching agents, bleach activators, silver
- the content of inorganic salt, particularly preferably sodium sulfate, in the dispersion (of the liquid washing or cleaning agent) should be selected such that at a temperature which is around 5 ° C., in particular around 10 ° C, preferably at 15 ° C, is less than the storage or storage temperature (about 20 ° C) of the dispersion, substantially a dispersion saturated with the inorganic salt.
- the content of organic salt, particularly preferably sodium sulfate should be selected such that at about 0 ° C to 15 ° C, in particular 0 ° C to 10 ° C, preferably 0 ° C to 5 ° C, essentially a dispersion saturated with the inorganic salt is obtained.
- the content of inorganic salt, particularly preferably sodium sulfate, in the dispersion, in particular in the dispersion medium 5 to 30 wt .-%, in particular 10 to 30 wt .-%, preferably 15 to 30 wt .-%, based on the Dispersing agent amount.
- the capsules can be incorporated stably into a washing or cleaning agent which is not completely saturated at room temperature with the inorganic salt, particularly preferably sodium sulfate, without the capsule shell being degraded or dissolved or dissolved becomes.
- the inorganic salt particularly preferably sodium sulfate
- the stability of the capsules according to the invention in such a formulation is based on a very slow kinetics of the degradation processes, in particular solubilization and / or dissociation processes, of the inorganic salt forming the capsule shell in the state of concentrated dispersion.
- the content of inorganic salt, particularly preferably sodium sulfate should be selected in the washing or cleaning agent such that the surfactants are at least substantially inactivated in the washing or cleaning agent, in particular by salting out, d.
- H. Inducing a phase separation in a low-surfactant, continuous phase and a preferably lamellar, generally highly viscous, crystalline or liquid-crystalline surfactant-rich phase, preferably by introducing at least one sulfate compound, particularly preferably sodium sulfate.
- dissolution of the organic peroxycarboxylic acid is at least substantially prevented or at least reduced in the washing or cleaning agent formulation.
- the term "continuous phase” is understood to mean the dispersant with the constituents or ingredients dissolved therein (for example salts, surfactants, etc.).
- the dispersant is preferably water.
- organic peroxycarboxylic acids in particular PAP
- active surfactants ie surfactants present in free or micellar form in the detergent formulation
- nonionic surfactants or nonionic surfactants lead in particular to an accelerated decomposition of the peroxycarboxylic acids.
- the surfactants are at least partially inactivated, which is done in particular by salting out, wherein the surfactants are converted from the particular micellar, active form in a preferably lamellar, crystalline or liquid crystalline form (crystal or liquid crystal formation), which is dispersed in a nearly surfactant-free continuous phase.
- the dispersed liquid crystal itself which can be separated by centrifugation, for example, should be as highly viscous as possible.
- the content of free or active surfactants in the washing and cleaning agent formulations according to the invention or in the continuous phase of the detergent and cleaner formulations according to the invention is at most 1%.
- the concentration of the inorganic salt, particularly preferably sodium sulfate, in the washing or cleaning agent according to the invention should be selected such that, when the washing or cleaning agent is used in the wash liquor, the capsule shell of the capsules according to the invention is broken down, for example dissolved or dissolved, which can be achieved for example by a dilution effect when entering the washing or cleaning agent in the wash liquor.
- This dilution effect should be so pronounced that - especially when using sodium sulfate as an inorganic salt - when using the detergent or cleaning agent in the wash liquor, the surfactants are again present in an active form.
- the concentration should be selected so that - as mentioned above - less than 1% of dissolved surfactant is present in the continuous phase of the undiluted washing or cleaning agent and no crystallization of the sulfate occurs when the temperature is lowered, in particular when the temperature drops to 0 ° C.
- the detergents and cleaners according to the invention have a suitably adapted or optimized surfactant ratio.
- the content of Alkylpolyglykolethern should be as low as possible.
- the liquid detergents and cleaners according to the invention should have at least substantially no halide ions, in particular no chloride ions.
- the amount of halide ions, in particular chloride ions is preferably at most 500 ppm, preferably at most 100 ppm, particularly preferably at most 30 ppm. Because the Applicant has surprisingly found that a high halide, in particular chloride ion concentration, as is customary, for example, in conventional detergents and cleaners due to impurities of some raw materials or ingredients, leads to an increased degradation of peroxycarboxylic acids. Thus, a reduction in the halide concentration, especially the chloride ion concentration, can lead to reduced degradation of the peroxycarboxylic acid.
- a low chloride ion concentration can be achieved according to the invention, for example, by the use of methylsulfate, phosphate, tosylate or cumene sulfonate compounds or by the use of low-chloride raw materials or ingredients (eg use of essentially halide-free components, eg. halide-free surfactants, halide-free phosphonates, etc.).
- the washing and cleaning agents according to the invention should have a pH of at most 7, in particular a pH of 3.5 to 7, preferably from 4.0 to 6.5, particularly preferably from 4.5 to 6, very particularly preferably of about 5.
- Bleaching agents based on peroxycarboxylic acids, such as PAP can surprisingly be stabilized relatively effectively in an acidic environment, in particular at a pH ⁇ 3.5, whereas at neutral or alkaline pH values a relatively rapid decomposition of peroxycarboxylic acids, such as PAP, takes place.
- the reduction of the pH in the detergents and cleaning agents according to the invention can be carried out, for example, by adding acids or acidic salts.
- bisulfates, bicarbonates and organic polycarboxylic acids are preferred, which can be used, for example, simultaneously as builders.
- the phosphonates used as complexing agents can be incorporated as phosphonic acids and then the desired pH can be adjusted by the addition of alkalis.
- the washing or cleaning agents according to the invention may contain at least one fatty acid.
- saturated and / or branched fatty acids in particular having a melting point below 30 ° C., are preferred according to the invention.
- Isocarb-16 ® of Sasol can be used in the inventive detergents or cleaning agents.
- the washing or cleaning agents according to the invention have an optimized citric acid or citrate content.
- citric acid or citrate can lead to a degradation of peroxycarboxylic acids, in particular PAP.
- PAP peroxycarboxylic acids
- the amounts used should not be too high and be adjusted with respect to the peroxycarboxylic acids, in particular PAP.
- the washing or cleaning agent according to the invention may contain at least one complexing agent which may be selected, in particular, from the group of quinoline and / or its salts, alkali metal polyphosphonates, picolinic acid and dipicolinic acid, mono- or polyphosphonic acids, in particular 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP), ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepenta (methylenephosphonic acid) (DTPMP), azacycloheptane diphosphonate (AHP), nitrilotriacetic acid (NTA), citrate and / or short chain dicarboxylic acids.
- HEDP 1-hydroxyethylidene-1,1-diphosphonic acid
- EDTA ethylenediaminetetraacetic acid
- DTPMP diethylenetriaminepenta
- AHP azacycloheptane diphosphonate
- NTA nitrilotriacetic acid
- complexing agents for heavy metals which can be used according to the invention are, for example, aminopolycarboxylic acids, aminohydroxypolycarboxylic acids, polyphosphonic acids and aminopolyphosphonic acids. These complexing agents are used according to the invention to inactivate or bind heavy metal ions, which act in particular as catalysts of oxidation processes and thus to a degradation of peroxycarboxylic acids, such as PAP, can lead and can be entered for example via water pipes or metallic components of the production equipment or on raw or ingredients in the detergent or cleaning agent according to the invention.
- the detergents and cleaners according to the invention may contain at least one water-miscible solvent having a low solvent power for the organic peroxycarboxylic acids, such as preferably glycerol.
- detergents and cleaning agents according to the invention may contain at least one catalase in order to effectively remove hydrogen peroxide formed by reaction of the peroxycarboxylic acid with water from the continuous phase of the product, in particular the washing or cleaning agent, so that in particular the enzymes optionally present there are effective before oxidation processes, which may possibly lead to a loss of activity of the enzymes are protected.
- at least one peroxidase and / or at least one antioxidant optionally in addition to the at least one catalase, may likewise be added to the detergents or cleaners according to the invention.
- Antioxidants preferred according to the invention are, for example, ascorbic acid, tocopherol, gallic acid or derivatives thereof.
- the washing or cleaning agent formulation according to the invention should be designed in such a way that it does not substantially dissolve or dissolve the capsules according to the invention, in particular.
- the components employed in the washing or cleaning composition of the present invention should be selected such that they are at least substantially compatible with the capsules of the invention, i. H. in particular in the washing or cleaning agent itself, in particular in the period before its application (storage time), no undesired chemical reactions, in particular degradation, oxidation or reduction reactions and / or hydrolysis reactions, occur between these components and the capsules, which lead to premature degradation and loss of activity of peroxycarboxylic acids.
- the peroxycarboxylic acid should be released from the capsules according to the invention sufficiently quickly.
- the release of the peroxycarboxylic acid is carried out in the application of the washing or cleaning agent, in particular by physical or by physicochemical or chemical processes, for example by degradation, in particular dissolution or dissolution of the capsule shell in the wash liquor, and by osmotic processes or
- the release of the encapsulated peroxycarboxylic acids, namely imidoperoxycarboxylic acid, for example PAP, from the capsules, in particular in a wash liquor, can take place by degradation, for example by dissolving or solubilizing, the capsule shell.
- These processes can be caused in particular by a dilution effect.
- the dilution of the inorganic salt in the dispersion or in the wash liquor is such that the solubility of the capsule shell forming inorganic salt in the dispersion or in the wash liquor is exceeded, so that a degradation of the capsule shell, in particular a waste or Dissolve, can be done.
- the release of the peroxycarboxylic acid can also be caused or supported by further processes.
- dilution of the inorganic salt, particularly preferably sodium sulfate, in the dispersion or wash liquor simultaneously leads to conversion of the surfactants from their inactive form (as present, for example, by salting out, for example, in the form of liquid crystals in the undiluted detergent or cleaner formulation ) in the active, dissolved or micellar form, so that the surfactants activated in this way, the peroxycarboxylic acid on and / or can dissolve or can support the solubilization of the capsule shell.
- diluting in the wash liquor occurs at the same time a significant pH jump of the generally acidic detergent and cleaning agent, so that also thereby the solubility of the peroxycarboxylic acid increases significantly.
- diffusion processes can occur (for example, diffusion of water molecules along the concentration gradient through the capsule shell into the core region of the capsule system, so that there at a corresponding pH of the wash liquor, in particular at a pH ⁇ 7, the peroxycarboxylic on or can be resolved).
- This can also - if the capsule shell is not completely degraded - a high osmotic pressure in the capsules are generated, which can lead to a bursting of the capsule shell with concomitant release of peroxycarboxylic acid in the wash liquor, so to speak.
- mechanical processes also play a role, for example a mechanical destruction of the capsules by the laundry items in the wash liquor or by contact with the washing drum.
- the special structure or the structure of the capsules according to the invention results in a controlled or delayed release of the peroxycarboxylic acid.
- a combination of the individual aforementioned processes with respect to the release of the peroxycarboxylic acid from the capsules according to the invention is also possible.
- the formation of the capsule shell is due to physical-chemical or physical interactions, so that no polymerization steps, in particular radical polymerization, are necessary for the formation of the capsule structure, as is the case in some prior art methods.
- Such polymerizations often lead to the decomposition of the active and / or active substance, in particular the sensitive peroxycarboxylic acid.
- the ratio of the inorganic salt-based capsule shell can be adjusted with respect to the inorganic peroxycarboxylic acid content, so that tailoring of the capsules can be achieved with respect to the sensitivity of the peroxycarboxylic acids to be encapsulated. Due to the specific adjustability of the capsule size, an effective dosage of the active ingredient can be made possible. In addition, capsules can be realized with a high content of active ingredient, so that only a small amount of starting material must be used for the capsule shells.
- the capsules essential to the invention do not contain disturbing capsule shells, which lead to undesirable residues on the laundry during the washing process.
- the capsule shell consisting of the inorganic salt is simply dissolved in the wash liquor and almost completely removed by rinsing processes.
- the use of the inorganic salt, particularly preferably sodium sulfate, in the washing or cleaning formulation makes it possible to stabilize the peroxycarboxylic acid on the one hand by inactivating the surfactants and on the other hand by largely preventing the degradation of the capsule shell so that the inorganic salt used has a double function in this respect Fulfills.
- the use of other substances, for example for the inactivation of surfactants, can therefore be omitted.
- the capsules can be applied on the one hand from aqueous solutions or dispersions out and on the other hand, the capsules in a water-containing liquid formulation, such as a liquid detergent or cleaner, not on or be dissolved.
- a water-containing liquid formulation such as a liquid detergent or cleaner
- the targeted modification of the capsule core or the capsule shell for example by adding complexing agents for heavy metal ions, a further improvement of the protection of the peroxycarboxylic acid and, consequently, a further increase in their storage stability can be achieved.
- the stability, in particular storage stability, of the peroxycarboxylic acid can be further increased so that there is an excellent adaptability of the capsule system with regard to the respective application.
- the capsules are suitable for incorporation or use in surfactant-containing systems, for example surface-active (surfactant-containing) dispersions for liquid detergents and cleaners.
- surfactant-containing systems for example surface-active (surfactant-containing) dispersions for liquid detergents and cleaners.
- PAP surface-active (surfactant-containing) dispersions for liquid detergents and cleaners.
- the stabilizing effect of the capsules which is further associated with a desired controlled release of the encapsulated peroxycarboxylic acid, can be synergistically enhanced by adjusting the medium in which the capsules are located to provide additional stabilization the peroxycarboxylic provides, in particular by inactivation of the surfactants, optimization or reduction of the pH, reduction of the halide content, use of a solvent with low solubility with respect to peroxycarboxylic acids and the like.
- the capsules can be incorporated in particular stable in liquid detergents and cleaners.
- An additional prevention or reduction of the capsule sedimentation can be achieved, for example, by means of suitable thickener systems known per se to the person skilled in the art.
- the capsules have a high storage stability and can effectively release the peroxycarboxylic acid even after longer periods of time.
- the washing and cleaning agent formulations according to the invention have, due to their previously mentioned, matched and synergistic modifications, d. H. Adaptation of the formulation, such as in particular low halide ion content, optimization of the pH, addition of complexing agents, inactivation of surfactants, special solvents or enzymes such as catalases or peroxidases, addition of antioxidants, compared to the prior art, considerable advantages, as in connection With the capsules according to the invention, the degradation of the sensitive peroxycarboxylic acid-based bleaching agents is markedly reduced.
- Example 1 Preparation of encapsulated or coated bleach capsules with a sulfate capsule shell
- the content of active substance was determined by means of an iodometric titration. A value of 70.5% was obtained.
- the coated bleach compound prepared in Example 1 was incorporated into the following liquid formulation (percentages are active): Dehydrol® ® LT7 (Fa. Cognis) 4.0% LAS (Maranil ® A 55) (Fa. Cognis) 22.5% Na 2 SO 4 12.5% Sequion ® 10H60 (Fa. Polygon Chemie AG) 1.0% Xanthan Gum (Jungbunzlauer) 0.4% Capsules according to the invention 4.3% water ad 100.0%
- the pH was adjusted to 5.0 with sodium hydroxide solution.
- Comparative Example There are incorporated untreated 3.5% Eureco ® W. The pH was also 5.0.
- the active oxygen content levels (100% at the start of storage) after various storage times at 40 ° C were determined.
- Formulation for a further liquid formulation in which the encapsulated or coated bleach capsules can be stored with a sulfate capsule shell LAS (Maranil ® A 55) 18.5% Dehydol ® LT 7 (Fa. Cognis) 8th % sodium sulphate 11% Xanthan gum 0.4% ® Sequion 10 H 60 (Fa. Polygon Chemie AG) 1 % Silicone antifoam 0.2% Capsule system from Example 1 3% water ad 100%
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Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE10327127 | 2003-06-13 | ||
DE10361100A DE10361100A1 (de) | 2003-06-13 | 2003-12-22 | Lagerstabile Kapseln auf Basis von Peroxycarbonsäuren |
PCT/EP2004/006168 WO2004110612A1 (de) | 2003-06-13 | 2004-06-08 | Lagerstabile kapseln auf basis von peroxycarbonsäuren |
Publications (3)
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EP1633468A1 EP1633468A1 (de) | 2006-03-15 |
EP1633468B1 EP1633468B1 (de) | 2009-01-14 |
EP1633468B2 true EP1633468B2 (de) | 2016-10-19 |
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EP04736308.0A Expired - Lifetime EP1633468B2 (de) | 2003-06-13 | 2004-06-08 | Flüssige wasch- und reinigungsmittelzusammensetzungen enthaltend lagerstabile kapseln auf basis von peroxycarbonsäuren |
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US (1) | US20070032396A1 (ja) |
EP (1) | EP1633468B2 (ja) |
JP (1) | JP2007527929A (ja) |
AT (1) | ATE420720T1 (ja) |
DE (2) | DE10361100A1 (ja) |
WO (1) | WO2004110612A1 (ja) |
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DE102006018780A1 (de) | 2006-04-20 | 2007-10-25 | Henkel Kgaa | Granulat eines sensitiven Wasch- oder Reinigungsmittelinhaltsstoffs |
DE102006023937A1 (de) * | 2006-05-19 | 2007-11-22 | Henkel Kgaa | Verkapselte Bleichmittelteilchen |
US7654412B2 (en) | 2006-05-30 | 2010-02-02 | Kimberly-Clark Worldwide, Inc. | Wet wipe dispensing system for dispensing warm wet wipes |
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US8034759B2 (en) * | 2008-10-31 | 2011-10-11 | Ecolab Usa Inc. | Enhanced stability peracid compositions |
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JP2801754B2 (ja) * | 1990-08-22 | 1998-09-21 | 花王株式会社 | 漂白剤組成物 |
DE4227277A1 (de) * | 1992-08-18 | 1994-02-24 | Hoechst Ag | Stabile Granulate für Wasch-, Reinigungs- und Desinfektionsmittel |
DE69404543T2 (de) * | 1993-05-06 | 1997-12-04 | Mitsubishi Gas Chemical Co | Stabilisiertes Natriumpercarbonatteilchen |
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IT1289155B1 (it) * | 1997-01-03 | 1998-09-29 | Ausimont Spa | Composizioni granulari di acido e-ftalimmido perossiesanoico |
EP1098696B2 (de) * | 1998-07-15 | 2010-07-14 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. | Polyelektrolythüllen auf biologischen templaten |
US6403547B1 (en) * | 1998-10-30 | 2002-06-11 | The Procter & Gamble Company | Process of cleaning carpets with a composition comprising peroxygen bleach |
ES2213949T3 (es) * | 1999-07-02 | 2004-09-01 | Cognis Iberia, S.L. | Microcapsulas i. |
US6593287B1 (en) * | 1999-12-08 | 2003-07-15 | The Procter & Gamble Company | Compositions including ether-capped poly(oxyalkylated) alcohol surfactants |
WO2002009864A1 (de) * | 2000-08-02 | 2002-02-07 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Verkapselung von flüssigen templatpartikeln |
FR2814380B1 (fr) * | 2000-09-25 | 2002-11-08 | Serobiologiques Lab Sa | Poudre de microcapsules et procede d'obtention |
US6927201B2 (en) * | 2001-08-28 | 2005-08-09 | Unilever Home & Personal Care Usa Division Of Conopco, Inc. | Capsules for incorporation into detergent or personal care compositions |
DE10157755A1 (de) * | 2001-11-27 | 2003-06-12 | Henkel Kgaa | Wirkstoffhaltige Gelkapseln und ihre Verwendung |
ES2274296T3 (es) * | 2002-12-20 | 2007-05-16 | Degussa Gmbh | Composicion liquida de detergente y agente de limpieza. |
DE10361084A1 (de) * | 2003-06-13 | 2005-01-05 | Henkel Kgaa | Lagerstabile Bleichmittelzusammensetzungen auf Basis von Peroxycarbonsäuren |
US7290499B2 (en) * | 2004-02-09 | 2007-11-06 | Emery Richard H | Self-cleaning pet litter box assembly |
-
2003
- 2003-12-22 DE DE10361100A patent/DE10361100A1/de not_active Ceased
-
2004
- 2004-06-08 WO PCT/EP2004/006168 patent/WO2004110612A1/de active Application Filing
- 2004-06-08 AT AT04736308T patent/ATE420720T1/de not_active IP Right Cessation
- 2004-06-08 JP JP2006515853A patent/JP2007527929A/ja not_active Ceased
- 2004-06-08 EP EP04736308.0A patent/EP1633468B2/de not_active Expired - Lifetime
- 2004-06-08 DE DE502004008872T patent/DE502004008872D1/de not_active Expired - Lifetime
-
2005
- 2005-12-09 US US11/299,166 patent/US20070032396A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
WO2004110612A1 (de) | 2004-12-23 |
EP1633468A1 (de) | 2006-03-15 |
DE502004008872D1 (de) | 2009-03-05 |
DE10361100A1 (de) | 2005-01-05 |
JP2007527929A (ja) | 2007-10-04 |
ATE420720T1 (de) | 2009-01-15 |
EP1633468B1 (de) | 2009-01-14 |
US20070032396A1 (en) | 2007-02-08 |
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